The word for the middle which Gautam Buddha used is very beautiful: he called MAJJIM NIKAYA, "the way of the exact middle." If you can keep the pendulum in the middle, the clock stops. The clock represents the mind -- and not just literally, not just as a metaphor; mind is time. Time consists of two tenses, not three. The present is not part of time; the past is time, the future is time. The present is the penetration of the beyond into the world of time.